Digestion Experiments With Wethers. 39 



As may be noted, the Native Hay, No. 6, as described in 

 Experiment VI, consisting of a large proportion of wire grass, 

 contains much less water soluble material than does the native 

 hay composed of Western Wheat Grass. 



The water soluble constituents of the hays were deter- 

 mined by covering the finely ground material with about five 

 times its weight of water in a glass-stoppered bottle and al- 

 lowing to macerate with frequent shaking for twenty-four 

 hours, filtering, washing, and evaporating the filtrate at the 

 temperature of boiling water to a constant weight. 



